Process for producing 1,3-butanediol and for optionally further producing (R)-3-hydroxybutyl (R)-3-hydroxybutyrate
US11078140B2 · kind B2 · utility
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Key dates
| Filing date | Sep 1, 2020 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Sep 1, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/07
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is described for producing 1,3-butanediol, wherein an ester of poly-(R)-3-hydroxybutyrate such as formed by transesterification with an alcohol is reduced by hydrogenation in the presence of a skeletal copper-based catalyst to provide 1,3-butanediol. The 1,3-butanediol may be transesterified by reaction with additional poly-(R)-3-hydroxybutyrate ester to produce (R)-3-hydroxybutyl (R)-3-hydroxybutyrate.
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